منابع مشابه
Supercooled melting in multicomponent Zr–Al–Cu–Ni diffusion couples
Diffusion couples combining a hcp Zr90Al10 supersaturated solid solution with a fcc Cu64Ni36 solid solution were annealed at 410 °C for different times. The reaction at the interface was investigated by transmission electron microscopy and energy dispersive x-ray spectroscopy. The investigations show the formation of a noncrystalline layer at the interface between the two solid solutions that g...
متن کاملCreep of Ni-Al and Ni-Cr-Al Superalloy Foams
The steady-state creep rate of Ni-base metallic foams, with superalloy composition (in wt. pct) Ni7.8∼9.1Al (relative density, ρ = 2.5-2.6) and Ni-13.5∼16.6Cr-5.1∼8.9Al (ρ = 2.8∼3.0), was measured under a range of temperatures (680∼825°C) and applied stresses (0.1∼0.3 MPa), and compared with that of NiAl intermetallic foams (ρ = 5.3). The stress exponent and activation energy are within the exp...
متن کاملRelation between self diffusion and interdiffusion in Al-Cu melts
We compare the experimental interdiffusion constants DAlCu in liquid Al81.3Cu18.7 at% to the experimental Cu self diffusion constants DCu in a similar Al80Cu20 at% melt. DAlCu are measured by an X-ray radiography technique and DCu are measured by the quasielastic neutron scattering method. It was found that DAlCu is enhanced by a factor of 3 with respect to DCu. The relation between DAlCu and D...
متن کاملReaction of Al/Ni Multilayers
Sputtered reactive multilayers applied as a heat source in electronic joining processes are 11 an emerging technology. It promises low-stress assembly of components while improving the 12 thermal contact and thus thermal resistance. The use of nanostructures can significantly enhance 13 the adhesion and reliability of joints between different materials. This work presents a 14 phenomenological ...
متن کاملRadial flow in central Al+Al and Ni+Ni reactions at 2 AGeV
The question whether a global freeze-out occurs in heavy-ion collisions below and up to energies of a few AGeV and to which extent this phenomenon is embedded into a collective radial expansion has been studied by various experiments [1, 2, 3]. Measurements performed at BEVALAC [1] indicate that the emission of light particles (p, d, t, He, α) around mid-rapidity in Au+Au collisions at 1 AGeV i...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2009
ISSN: 1742-6596
DOI: 10.1088/1742-6596/144/1/012119